Special Event – IOTA/ES – Call for Observations

Flyby target of a spacecraft Near Earth Asteroids - Call for Observations by the ACROSS Team Past Event Special Event

2025 Sep 24 ~01:52 UT: (3200) Phaethon occults UCAC4 662-020882 (12.5 mag)

2025-09-21

Apollo asteroid! Short max. duration of only 0.45 s. Target of the Destiny+ mission by JAXA and DLR! Last update: 2025 Sep 21, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1727-3200-57741-650668-U020882

Flyby target of a spacecraft Near Earth Asteroids - Call for Observations by the ACROSS Team Past Event Special Event

2025 Sep 16 ~03:08 UT: (3200) Phaethon occults UCAC4 659-020826 (12.8 mag)

2025-09-12

Apollo asteroid! Faint star! Short max. duration of only 0.58 s. Target of the Destiny+ mission by JAXA and DLR! Last update: 2025 Sep 12, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1719-3200-59422-650620-U020826

Main-Belt Asteroids Past Event Special Event

2025 Jul 04 ~01:32 UT: (2470) Agematsu occults TYC 0023-00548-1 (10.6 mag)

2025-07-01

Possible satellite! On 2024 August 7, a possible satellite was discovered by J. Juan, ES. The upcoming occultation could confirm a discovery. Please observe! (Shadow profile from Occult database, provided…

Comets Past Event Special Event

2025 May 27 ~01:15 UT: 13P/Olbers occults UCAC4 316-190178 (13.3 mag)

2025-05-10

Occultation by a comet! Updated path prediction: Path shift to the northwest! Very large error limits. All stations should observe! Last update: 2025 May 19, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1607-13P-260797-646310-U190178

Past Event Planetary Moons Special Event

2025 May 08 ~21:44 UT: P4M02 Deimos, satellite of Mars, occults TYC 1396-00676-1 (9.2 mag)

2025-04-29

Short max. duration of only 0.54 s! Nikolai Wünsche (IOTA/ES) gives on his call for observation on astronomie.de some observing advices: – Timimg: It should be possible to measure the…

Main-Belt Asteroids Past Event Special Event

2025 Apr 16 ~19:32 UT: (90) Antiope occults UCAC4 568-040660 (14.9 mag)

2025-04-06

Binary asteroid! Very faint star! Faint mag drop of only 0.8 mag! Expected orientation of the two components on the Earth plane at 19:32UT: Expect blinks or double occultations! Last…

Past Event Special Event

2025 Mar 29: Partial Solar Eclipse – Measure the Solar Diameter during Solar Maximum

2025-03-24

On behalf of Prof. Costantino Sigismondi, International Center for Relativistic Astrophysics (ICRA), Italy, we present this very special call for observations: Introduction: Measuring the solar diameter during total eclipses is…

Past Event Special Event Trans-Neptunian Objects, Cubewanos and Centaurs - Predicted by the ERC Lucky Star project

2025 Feb 22 ~19:36 UT: (44594) 1999 OX3 occults UCAC4 541-005356 (15.7 mag)

2025-02-20

Centaur! Trans-Neptunian Object! Observation campaign by the ERC Lucky Star project! Very faint star! Very extended error limits – all stations should observe! Last update: 2025 Feb 20, Occult Watcher…

Past Event Special Event Trans-Neptunian Objects, Cubewanos and Centaurs - Predicted by the ERC Lucky Star project

2025 Jan 30 ~01:50 UT: (468861) 2013 LU28 occults TYC 2449-01891-1 (12.0 mag)

2025-01-19

Trans-Neptunian Object! Centaur! Special observation campaign by the ERC Lucky Star project! See Call for Observation in Journal for Occultation Astronomy 2025-01 Last update: 2025 Jan 29, Occult Watcher Cloud:…

Flyby target of a spacecraft Near Earth Asteroids - Call for Observations by the ACROSS Team Past Event Special Event

2025 Jan 28 ~21:09 UT: (65803) Didymos occults UCAC4 533-004123 (12.5 mag)

2025-01-19

Apollo asteroid! Target of the DART and HERA missions! Extreme short max. duration of only 0.03 s! Last update: 2025 Jan 19, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1488-65803-33707-649042-U004123

Category: Special Event